Rolling-mill



- 4 4 SLeets-Sheet I}, J; PAWELL & J. HEM'PHILL.

ROLLING MILL.

No. 882,088. Patented'May' 1-,11888.

(No Model.)

WITH

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-%%;%w I W (No Model.) 4 Sheets-Sheet J. FAWELL & J. HEMPHILL. ROLLINGMILL.

I 1N0.'382 ,035. Patented Ma'y'1,:1888.

WITNESSES:

(No Model.) I 4 Sheets-Sheet 3.

' J. PAWELL & J. HEMPHILL.

- ROLLING MILL.

No. 382,035. Patented May 1, 1888.

WITNESSES:

(No Model.) {Shets-Sheet 4.v

I J. FAWELL 85 J. HEMPHILL,

ROLLING MILL.

No. 382,035. Patented May 1, 1888.

UNITED STATES PATENT OFFICE.

JOSEPH FAWELL-AND JAMES HEMPHILL, OF PITTSB URG, PENNSYLVANIA.

ROLLING-M LL.

SPECIFICATION forming pirt 0f Lttis Patent NO. 382,035; dated May 1,1888.

Application filed January 4, 1888. Serial No. 259,765. (No model.)

To all whom it may concern.-

Be it known that we, J osErH FAWELL and J AMES HEMPHILL, citizens of theUnited States, residing at Pittsburg, in the county of Allegheny andState of Pennsylvania, have invented or discovered certain new and use=ful Improvements in Rolling=Mills, of which improvements the followingis a specification.

In universal mills as heretofore constructed it has been customary todrive the edging or vertical rolls from their upper ends, in order torender the driving mechanism readily accessible and to prevent itsclogging and cut= ting from the scale and other material. Such anarrangement of the driving mechanism is objectionable, as limiting thecapacity of the mill for operation on narrow material, or elsenecessitating the employment of small gearing on the Vertical rolls topermit their close approach to each other. Such small gearing, however,requires greater power to drive the rolls, and is less likely towithstand such increased power.

The object of the invention herein is to provide for the closeadjustment of the vertical rolls as to permit of their operation on thesmallest material and the arrangement of the driving mechanism so thatthe same shall be readily accessible for repairs and free from allliability of being clogged or cut by scale,

In general terms, the invention consistsin the construction andcombination of devices or mechanism, all as more fully hereinafterdescribed and claimed.

In the accompanying drawings, forming a part of this specification,Figure 1 is a sec= tional elevation of that portion of a universalmillembodying our invention. Figs. 2 and 3 are similar views ofmodifications of the same. Fig. 4 is an end view of that portion of themill; and Figs. 5 and 6 are detail views of the sleeve for holding thedriving-gears in engagement and of one of the roll-shifting weights,respectively. p

.In the practice of our invention the standards or housings 1 aresecured in the shoes 2 in the usual manner, and in these housings aresupported the ends of the horizontal beams 3 and 4, the beams 8 beingprovided on their inner sides with ribs 5, forming ways or supports forthe upper journalboxes of the rolls,

and the beams 4 having grooves 6 formed therein to guide and support thelower j ournal-- boxes. The housings are tied together by rods 7,passing therethrough. J ournal boxes 8, 9, and 10 are arranged betweenand supported by the beams 3 and 4, as above stated, and in these journalboxes are mounted the trunnions ll of the rolls A, B, and 0. Asshown.

in several views, the trunnions at the upper ends of the rolls A and Care extended for the reception of the bevel gear-wheels 12, which arekeyed thereto. These gear-wheels 12 intermesh withcorrespondingly-shaped gearwheels 13 on the power-shaft 14, mounted insuitable bearings in the upper ends of the housings 1. Along this shaft14 is formed a feather or rib, 15, which engages grooves in the wheels13 and causes them to rotate therewith, while permitting of theirlongitudinal movement therealong. Around the hubs of the wheels 13 aresecured sleeves 16, formed in two parts. (See Figs. 1, 2, 3, and 5.) Thelower parts of said sleeves have semicircular ribs 17 formed thereon,said ribs projecting down into circular grooves 18, formed in the hubsof the gear-wheels 12, thereby locking the gear-wheels 12 and 13together and keeping them constantly in engagement with each other, thewheels 13 being moved along the shaft 14 by the wheels 12 in theirmovements.

Bearing or adjusting plates 19 are bolted to the outer sides of thejournalboxes 8 and 10 of the rolls A and O, and to these bearingplatesthe ends of the adjusting-screws 20 are loosely connected, said screwspassing through nuts 21, arranged in the housings 1, as shown. On theouter ends of the-screws 20 are mounted the pinions 22, which areprovided with keys or feathers engaging longitudinal grooves in thescrews, whereby the screws are caused to rotate with the pinions, butare free to move through them. One of the pinions 22, at

' each end of the mill, is driven by any suitablyarranged mechanism, themotion of the driven pinions being transmitted to the other pinions byidlers 23, loosely mounted on suitable pins or journals, 24, secured tothe housings.

In the housings at each end of the mill are arranged single-actingfluid-pressure cylinders 25, having pistons. 26, connected tocross-heads 27, to which the outer ends of the rods 28 are secured. Theinner ends of these rods are connected to journal-boxes 9 of theintermediate roll, B. By operating these fluid pressure mechanismsalternately the roll B is shifted and held in contact with one or theother of the rolls A O, which are driven by the mechanism abovedescribed and impart their motion to the roll B when held in firmcontact with either of them.

It will be observed that the rolls A and O are driven in the samedirection, as indicated by the arrows in Fig. 1, and hence by shiftingthe intermediate roll from one to the other of the driven rolls theoperation of the mill is reversed, and back and forth passes can be madeit is not generally necessary to shift the intermediate roll, as abovedescribed; but it is held normally against one or the other of theoutside rolls, and hence the fluid-pressure mechanism need be employedonly at one end for the purpose of holding the intermediate roll incontact with one of the driven rolls.

In lieu of the fluid-pressure mechanism for holding the intermediateroll against one of the outer rolls, weights may be employed, and insuch case wire ropes 29, or other flexible devices, are attached to thejournal-boxes 9 of the intermediate roll, and, passing aroundguide-pulleys 30, mounted on the housings 1, are attached to the weights33, which serve to hold the intermediate roll in sufliciently firmcontact with the outer roll.

Vhen, as above stated, it is not desired to shift the intermediate rollfor the purpose of reversing the mill, that one of the outside rollswhich is designed to be directly operative in rolling is held againstits adjusting-screws either byafluid-pressure mechanism, as abovedescribed, or by a wire rope, 32, and weight 33, as shown in Figs. 2 and3.

In cases where it may be desirable to drive the intermediate rollpositively the trunnions at the lower ends of the intermediate roll andof that outside roll by which it is to be driven are extended, as shownin Fig. 2, and intermeshing pinions 34 are keyed thereon. The driving ofthe roll B may be effected entirely through these pinions 34, in whichcase the roll A serves merely as a transmitting-shaft, as shown in Fig.2; or the operations of the pinions may be assisted by the roll A, whichis held in contact with the rolls B, as above described, and is madeslightly larger in diameter than the roll B, so that it will tend todrive the roll B a little faster than the pinions 34, and hence willrelieve the pinions of a considerable portion of the strain to whichthey would be otherwise subjected. When the roll B is driven entirely bythe pinions 34, the journal-boxes of the rolls A and B can be boltedtogether, as shown in Fig. 2.

The weights 33 are arranged one inside of the other, as shown in Fig. 6,thereby making them practically one weight, in so far as convenience inoperating around the mill and a saving in space is concerned.

The principal characteristic of the invention herein is theinterposition of a roll between rolls generally used and driven by orfrom the outer positively-driven rolls, thereby permitting of theemployment of larger and stronger driving'gear in a position where thesame are readily accessible and removable for change or repairs; and,further, the interposition of the movable roll B renders it possible toemploy three-high rolls in lieu of two-high in a universal mill, therebyavoiding the necessity of reversing the entire mill for the back andforth passes. The construction shown in Fig. 1, whereby the reversing ofthe vertical rolls is avoided, can be employed in connection withreversing two-high horizontal rolls, if desired, the operative surfacesof such horizontal rolls being increased in length an amount equal tothe diameter of the intermediate roll.

The mill with which theinvention herein is to be incorporated being ofthe usual construction, and the construction and operation of thethree-high rolls being also so wellknown, it is not deemed necessary toillustrate such well-known constructions.

\Ve claim herein as our invention- 1. In a universal mill, thecombination of three vertical rolls, the outer rolls being positivelydriven and the intermediate'roll being driven by or from one of theouter rolls, substantially as set forth. 7 V

2. In a universal mill, the combination of three vertical rolls, drivingmechanism connected to the upper ends of the outer rolls, and theintermediate roll driven by or from one of the outer rolls,substantially as set forth.

3. In a universal mill, the combination of three vertical rolls, bevelgear-wheels secured to the upper ends of the outer rolls,correspondingly-shaped gears secured to the power, as described, andsemicireulan'ibs connected to the gear-wheels on the power-shaft andengaging grooves in the gear-wheels on the rolls, substantially as setforth.

4. In a universal mill, the combination of three vertical rolls, theouter rolls being positively driven and the intermediate roll beingmovable and driven by or from either of the outer rolls, substantiallyas set forth.

5. In a universal mill, the combination of three vertical rolls, theouter rolls being positively driven and the intermediate rolls held infrictional contact with one of the outer rolls and driven thereby,substantially as set forth.

6. In a universal mill, the combination of two positively-drivenvertical rolls and an intermediate roll held in frictional contact withone of the outer rolls, said outer roll and the intermediate roll beingprovided with intermeshing pinions, substantially as set forth.

7. In a universal mill, the combination of l by or from one of the outerrolls, substantially 10 two positively-driven vertical rolls, an interasset forth. mediate roll, and a fluid-pressure mechanism In testimonywhereof we have hereunto set for shifting and holding the intermediateroll our hands.

5 in frictional contact with the outer rolls al- JOSEPH FAWELL.

ternately,.substantially as set forth. JAMES HEMPHILL.

8. In a universal mill, the combination of I Witnesses:

three-high horizontal rolls and three vertical W. B. CORWIN, rolls, theintermediate roll thereof being driven l DARWIN S. WOLCOTT.

